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Code p2101, p2176, p1516, this are the codes what are they? on 2004 Chevrolet Trailblazer

Those are the codes on the car I need some help please.
Thank you

Asked by for the 2004 Chevrolet Trailblazer
All the codes relate to sensor values being out of range concerning electronic throttle control system. This should be diagnosed by a technician.
1 more answer
all codes pertain to throttle position issues. best you seek daig and est from your mech. there is a test procedure to follow to determine which sensor is bad.
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